A workpiece detection and pressing platform

Abstract

The present invention discloses a workpiece detection clamping platform, including a frame, provided with a lifting platform; a support plate for placing the workpiece, the support plate is provided with a yield structure matching the workpiece; a clamping mechanism, arranged above the support plate, the clamping mechanism includes a pressure head assembly and a driving member, the pressure head assembly is arranged on the bottom surface of the lifting platform, the pressure head assembly has an initial position and a working position for clamping the workpiece, the driving member is connected to the lifting platform to drive the lifting platform to move up and down, and realize the switching of the pressure head assembly between the initial position and the working position, and the pressure head assembly can be retracted to press against the workpiece surface at different heights. The workpiece detection clamping platform provided by the present invention has a clamping mechanism, and a retractable pressure head assembly is arranged on the clamping mechanism, and the pressure head assembly can be pressed against and pressed against the workpiece surface at different heights, simulating the state of the workpiece being tightened by multiple bolts during use, which is convenient for the detection of the workpiece.

Description

Technical Field

[0001] The invention relates to the technical field of clamping equipment, and in particular to a workpiece detection clamping platform. Background Art

[0002] The clamping mechanism includes manual clamping, mechanical clamping, and hydraulic clamping. The mechanical clamping mechanism consists of a driving part, a pressing head, and a workbench. During clamping, the driving part drives the pressing head to move downward to clamp the workpiece.

[0003] At present, for workpieces that need to be installed on precision structures, it is often necessary to test in advance whether the various data when being tightened or pressed by screws meet the standards. Since such workpieces are mostly irregular in shape, uneven in surface, and complex in surface structure, the method of tightening with screws is time-consuming and labor-intensive, and cannot meet the requirements of production rhythm. Therefore, a clamping platform for workpiece inspection can be used, and a clamping mechanism is set on the clamping platform. The clamping mechanism is used to clamp the workpiece to simulate the state when the workpiece is tightened by multiple screws at various locations. Because the heights of the pressure points on the surface of the workpiece are inconsistent, and due to the existence of manufacturing tolerances, the heights of the same pressure points between different tested pieces are also inconsistent. When the ordinary clamping mechanism is clamped, the pressure head only contacts the high point, and the pressure head continues to drop to contact the low point, which makes the surface of the workpiece unevenly stressed, and some positions cannot be pressed by the pressure head. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a workpiece inspection clamping platform, which has a clamping mechanism, and a retractable pressure head assembly is provided on the clamping mechanism. The pressure head assembly can abut against different heights of the workpiece surface, and can eliminate the height difference at the same position caused by manufacturing tolerance, and achieve clamping, simulating the state of the workpiece being tightened by multiple bolts during use, so as to facilitate the inspection of the workpiece.

[0005] According to the first aspect of the embodiment of the present invention, a workpiece detection clamping platform includes a frame with a lifting platform; a support plate for placing the workpiece, and a yield structure matching the workpiece is provided on the support plate; a clamping mechanism is arranged above the support plate, and the clamping mechanism includes a pressure head assembly and a driving member. The pressure head assembly is arranged on the bottom surface of the lifting platform, and the pressure head assembly has an initial position and a working position for clamping the workpiece. The driving member is connected to the lifting platform to drive the lifting platform to rise and fall, so as to realize the switching of the pressure head assembly between the initial position and the working position, and the pressure head assembly can be extended and retracted to press against the workpiece surface at different heights.

[0006] A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: The workpiece is fixed on the support plate. When the driving member drives the pressing head to descend, after the first pressing rod contacts the workpiece, the pressing head continues to descend, so that the first pressing rod expands and contracts according to the height of the workpiece surface until the first pressing rod presses the workpiece. Since the surface of the workpiece is uneven and the heights of the pressing points are inconsistent, and due to manufacturing tolerances, the heights of the same pressing point position are also inconsistent between different workpieces to be tested, an ordinary workpiece detection and pressing platform cannot make the workpiece receive uniform force everywhere. In the present invention, the first pressing rod is telescopic and can abut against different heights of the workpiece surface and press each part of the workpiece.

[0007] According to some embodiments of the present invention, it further includes a safety limit structure for fixing the pressing head assembly in the initial position. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: It can prevent the pressing head from falling and causing injury when the operator operates under the pressing head assembly, and is convenient for the operator to repair or replace the workpiece.

[0008] According to some embodiments of the present invention, the safety limit structure includes an automatic limit structure. One end of the automatic limit structure is fixedly connected to the frame, and a telescopic limit member is provided at the other end. A first connection hole is provided on the lifting table. When the pressing head assembly is in the initial position, the telescopic limit member extends into the first connection hole to fix the pressing head assembly. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: During the operation of the device, when the lifting table drives the pressing head assembly back to the initial position, the automatic limit structure is activated to fix the lifting table and the pressing head assembly.

[0009] According to some embodiments of the present invention, the safety limit structure further includes a manual limit structure. One end of the manual limit structure is fixedly connected to the frame, and a second limit hole is provided at the other end. A detachable limit rod is provided on the second limit hole. A second connection hole is correspondingly provided on the lifting table. When the pressing head assembly is in the initial position, the second limit hole is aligned with the second connection hole, and the pressing head assembly can be fixed by the limit rod. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: When the device is powered off and needs to be repaired, the manual limit structure is used to fix the lifting table and the pressing head assembly to prevent the pressing head assembly from falling and injuring the maintenance personnel.

[0010] According to some embodiments of the present invention, the pressing head assembly includes a pressure structure and a pressing head seat. The pressing head seat is arranged on the bottom surface of the lifting table. The pressure structure is connected to the bottom of the pressing head seat. The pressure structure is connected with a telescopic end, and the pressure structure can transmit pressure to the telescopic end. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: By adjusting the pressure structure, the pressure magnitude of the telescopic end can be changed.

[0011] According to some embodiments of the present invention, the pressure structure is a nitrogen spring. The nitrogen spring has a driving chamber, and an air inlet passage is provided in the driving chamber. An air chamber is provided in the pressure head seat, and compressed gas is introduced into the air chamber. The air inlet passages of all the pressure structures are communicated with the air chamber, and an air valve is provided on the air inlet passage. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: the pressing forces applied to various parts of the workpiece surface by each telescopic end are the same, so that the workpiece is uniformly stressed.

[0012] According to some embodiments of the present invention, the pressure structure is a hydraulic telescopic assembly. The hydraulic telescopic assembly has a pressure chamber, and a liquid inlet passage is provided in the pressure chamber. A hydraulic chamber is provided in the pressure head seat, and liquid is introduced into the hydraulic chamber. The liquid inlet passages of all the pressure structures are communicated with the hydraulic chamber. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: the pressing forces applied to various parts of the workpiece surface by each telescopic end are the same, so that the workpiece is uniformly stressed.

[0013] According to some embodiments of the present invention, some of the telescopic ends are connected with a first pressing rod. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: the pressure structure can transmit pressure to the first pressing rod, and the setting of the first pressing rod extends the telescopic end, which is suitable for various working conditions.

[0014] According to some embodiments of the present invention, some of the telescopic ends are connected with two second pressing rods. The two second pressing rods form a group, and the second pressing rods in the same group are rotatably connected to the same pressure structure. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: the distance between the second pressing rods in the same group is small, and adjacent positions on the workpiece surface can be pressed simultaneously. The second pressing rod can rotate according to the height of the workpiece surface to press the workpiece.

[0015] According to some embodiments of the present invention, a rotating block is hinged to the output end of the pressure structure, and the second pressing rods in the same group are hinged to the rotating block. A workpiece detection and pressing platform according to an embodiment of the present invention has at least the following technical effects: the second pressing rod can always maintain a state close to vertical, increasing the contact area with the workpiece.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the drawings and embodiments.

[0018] Figure 1 is a schematic installation structure diagram of an embodiment of the present invention;

[0019] Figure 2 is a partial structure diagram of an embodiment of the present invention;

[0020] Figure 3 is a partial structural exploded view of an embodiment of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the clamping mechanism;

[0022] Figure 5 Schematic diagram of the installation structure of the pressure head assembly;

[0023] Figure 6 is a schematic diagram of the installation structure of the pressure structure and the first pressure rod;

[0024] Figure 7 is a schematic diagram of the structure of the pressure structure and the second pressure rod;

[0025] Figure 8 is a cross-sectional view of the pressure structure and the second pressure rod;

[0026] Figure 9 It is a schematic diagram of the working state of the pressure structure and the second pressure rod.

[0027] Reference numerals:

[0028] Frame 1000, workbench 1010, lifting platform 1020, support plate 1100, yielding structure 1110, guide structure 1200, guide hole 1210, anti-collision rod 1300;

[0029] The clamping mechanism 2000, the pressure head assembly 2100, the pressure head seat 2110, the driving member 2200, the connecting structure 2210, the connecting portion 2211, the connecting hole 2212, the fixing portion 2213, the clamping groove 2214, the first pressure rod 2300, the pressure structure 2400, the air inlet channel 2410, the air valve 2420, the piston rod 2430, the cylinder 2440, the driving chamber 2450, the second pressure rod 2500, and the rotating block 2510;

[0030] Safety limiting structure 3000, automatic limiting structure 3100, first limiting hole 3110, first connecting hole 3120, telescopic limiting member 3130, detection bracket 3140, first sensor 3150, second sensor 3160, manual limiting structure 3200, second limiting hole 3210, second connecting hole 3220, limiting rod 3230, placement hole 3240, third sensor 3250, fourth sensor 3260. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Reference Figures 1 to 2 A workpiece detection clamping platform according to an embodiment of the present invention includes a frame 1000, a support plate 1100, and a clamping mechanism 2000.

[0035] The frame 1000 is provided with a lifting platform 1020; a workbench 1010 is fixedly provided at the lower part of the frame 1000, and a support plate 1100 is fixed on the workbench 1010 for placing a workpiece; specifically, this embodiment is mainly used for pressing a workpiece with an irregular surface, therefore, referring to Figure 2 The support plate 1100 is provided with a yield structure 1110 corresponding to the workpiece to be pressed, so that the workpiece can be placed on the support plate 1100 as stably as possible.

[0036] Reference Figures 2 to 4, The pressing mechanism 2000 is arranged above the support plate 1100. The pressing mechanism 2000 includes a pressing head assembly 2100 and a driving member 2200. A pressing head seat 2110 is provided on the bottom surface of the lifting table 1020. The pressing head assembly 2100 is connected to the bottom of the pressing head seat 2110. The pressing head assembly 2100 has an initial position and a working position for pressing the workpiece. The driving member 2200 is connected to the lifting table 1020 to drive the lifting table 1020 to lift and lower, so as to realize the switching of the pressing head assembly 2100 between the initial position and the working position. Specifically, the driving member 2200 can be a lifting cylinder. The body of the lifting cylinder is installed on the frame 1000, and the telescopic end of the lifting cylinder is connected to the pressing head.

[0037] Specifically, referring to Figure 3 , a connection structure 2210 is installed on the lifting table 1020. The connection structure 2210 includes a connection portion 2211 and a fixing portion 2213. The connection portion 2211 is provided with a connection hole 2212 for connecting to the driving shaft of the driving member 2200. The fixing portion 2213 is fixed to the lifting table 1020 by screws. A card slot 2214 matching the connection portion 2211 is radially formed on the fixing portion 2213 for clamping the connection portion 2211 to the fixing portion 2213.

[0038] The setting of the connection structure 2210 facilitates the connection and disassembly of the driving member 2200 and the lifting table 1020. When disassembling, remove the screws to separate the connection structure 2210 (fixing portion 2213) from the lifting table 1020, disengage the connection portion 2211 from the card slot 2214, and then remove the connection portion 2211 from the driving shaft of the driving member 2200 to complete the disassembly.

[0039] The pressing head assembly 2100 is telescopic to abut against different heights on the surface of the workpiece. Since the surface of the workpiece is uneven, an ordinary pressing mechanism 2000 cannot press all parts of the workpiece and simulate the state where the workpiece is tightened by multiple bolts during use. However, in this embodiment, the pressing head assembly 2100 can be telescoped according to different heights on the surface of the workpiece, so that the bottom of the pressing head assembly 2100 can abut against different heights on the surface of the workpiece and press all parts of the workpiece.

[0040] Referring to Figure 2 , in some specific embodiments of the present invention, a safety limit structure 3000 is further included, which is used to fix the pressing head assembly 2100 in the initial position to prevent the pressing head from falling and causing injury when the operator operates under the pressing head assembly 2100, and is convenient for the operator to perform maintenance or replace the workpiece, etc.

[0041] Referring to Figure 3, in a further embodiment of the present invention, the safety limit structure 3000 includes an automatic limit structure 3100. One end of the automatic limit structure 3100 is fixedly connected to the frame 1000, and a telescopic limit member 3130 is provided at the other end. A first connection hole 3120 is provided on the lifting table 1020. When the pressing head assembly 2100 is in the initial position, the telescopic limit member 3130 extends into the first connection hole 3120 to fix the pressing head assembly 2100.

[0042] During the operation of the device, when the lifting table 1020 drives the pressing head assembly 2100 back to the initial position, the automatic limit structure 3100 is activated. Specifically, a first limit hole 3110 is provided at the lower end of the automatic limit structure 3100, and the telescopic end of the telescopic limit member 3130 can extend out from the first limit hole 3110. The telescopic limit member 3130 can be a cylinder. When the pressing head assembly 2100 rises to the initial position, the first limit hole 3110 is aligned with the first connection hole 3120, and the telescopic end of the telescopic limit member 3130 passes through the first limit hole 3110 and extends into the first connection hole 3120.

[0043] Specifically, a detection bracket 3140 is further provided on the frame 1000. The detection bracket 3140 cooperates with the automatic limit structure 3100 to ensure the safe operation. One end of the detection bracket 3140 is fixed to the frame 1000, and a first sensor 3150 is provided at the other end. The height of the first sensor 3150 is flush with the surface height of the lifting table 1020 when in the initial position. When the first sensor 3150 senses that the lifting table 1020 has moved in place, it issues a command signal to drive the telescopic limit member 3130, and the telescopic end of the telescopic limit member 3130 extends into the first connection hole 3120 to fix the lifting table 1020.

[0044] A second sensor 3160 is provided on the lifting table 1020, and the sensing end of the second sensor 3160 extends into the first connection hole 3120. When the second sensor 3160 detects that the telescopic end of the telescopic limit member 3130 is within the first connection hole 3120, the driving member 2200 cannot drive the lifting table 1020 to move any further; when the second sensor 3160 does not detect the telescopic end of the telescopic limit member 3130, the driving member 2200 can operate normally.

[0045] Refer to Figure 3, in a further embodiment of the present invention, the safety limit structure 3000 further includes a manual limit structure 3200. When the device is powered off and needs to be repaired, the manual limit structure 3200 is used to fix the lifting table 1020 and the press head assembly 2100 to prevent the press head assembly 2100 from falling and injuring the maintenance personnel. One end of the manual limit structure 3200 is fixedly connected to the frame 1000, and the other end is provided with a second limit hole 3210. A detachable limit rod 3230 is provided on the second limit hole 3210. A second connection hole 3220 is correspondingly provided on the lifting table 1020. When the press head assembly 2100 is in the initial position, the second limit hole 3210 is aligned with the second connection hole 3220, and the press head assembly 2100 can be fixed by the limit rod 3230.

[0046] Specifically, a placement hole 3240 is provided at the upper end of the manual limit structure 3200. The limit rod 3230 is inserted into the placement hole 3240. A third sensor 3250 is provided beside the placement hole 3240 to detect whether the limit rod 3230 is located in the placement hole 3240, preventing the device from being forcibly started when the limit rod is still in the second connection hole 3220, resulting in damage to the manual limit structure 3200. When starting the repair, the maintenance personnel remove the limit rod 3230, pass the limit rod 3230 through the second limit hole 3210 and insert it into the second connection hole 3220 to fix the lifting table 1020.

[0047] A fourth sensor 3260 is provided on the lifting table 1020, and the sensing end of the fourth sensor 3260 extends into the second connection hole 3220. When the fourth sensor 3260 detects that the limit rod 3230 is located in the second connection hole 3220, the maintenance personnel can start the repair; when the fourth sensor 3260 cannot detect the limit rod 3230, the device gives a warning, the maintenance personnel cannot perform the repair, and the device cannot be powered on and started to work. After the repair is completed, the maintenance personnel remove the limit rod 3230 from the second limit hole 3210 and insert the limit rod 3230 into the placement hole 3240 to restart the device.

[0048] Refer to Figure 5 , in some specific embodiments of the present invention, the press head assembly 2100 includes a pressure structure 2400 and a press head seat 2110. The press head seat 2110 is provided on the bottom surface of the lifting table 1020. The pressure structure 2400 is connected to the bottom of the press head seat 2110. The pressure structure 2400 is connected with a telescopic end. The pressure structure 2400 can transmit pressure to the telescopic end, and the pressure magnitude of the telescopic end can be changed by adjusting the pressure structure 2400.

[0049] Refer to Figure 8In a further embodiment of the present invention, the pressure structure 2400 is a nitrogen spring, which has the advantages of small size, large elastic force, stable operation, long service life, no need for pre-tightening, and controllable elastic force. The nitrogen spring includes a piston rod 2430 and a cylinder 2440. The cylinder 2440 has a driving chamber 2450. The top part of the piston rod 2430 is embedded in the driving chamber 2450 and can slide in the depth direction of the driving chamber 2450. The piston rod 2430 is sealed and connected to the driving chamber 2450. The lower end of the piston rod 2430 is connected to the telescopic end.

[0050] An air cavity is provided in the pressure head seat 2110, and compressed gas such as nitrogen is introduced into the air cavity. The driving cavity 2450 is provided with an air inlet channel 2410. The air inlet channels 2410 of all pressure structures 2400 are connected to the air cavity, and an air valve 2420 is provided on the air inlet channel 2410. Compressed nitrogen enters the driving cavity 2450 through the air inlet channel 2410, generates pressure, and thus transmits pressure to the telescopic end; and because all pressure structures 2400 are connected to the air cavity, the air pressure in each driving cavity 2450 is equal, the pressure generated is the same, and the pressing force applied by each telescopic end to each part of the workpiece surface is the same, so that the workpiece is evenly stressed. Preferably, an air pressure sensor is also provided in the pressure structure 2400, which can monitor the magnitude of the pressing force in real time.

[0051] When installing the pressure head assembly 2100, the piston rod 2430 is pressed into the driving chamber 2450 to discharge the air in the driving chamber 2450, and then high-pressure nitrogen is filled into the driving chamber 2450 through the air inlet channel 2410. When working, the air valve 2420 is opened. Since the driving chamber 2450 is connected to the air chamber, changing the pressure in the air chamber can change the pressure in the driving chamber 2450, thereby changing the pressure applied to the telescopic end.

[0052] In some other specific embodiments of the present invention, the pressure structure 2400 is a hydraulic telescopic assembly, which includes a telescopic rod and a cylinder body. The cylinder body has a pressure chamber. The top part of the telescopic rod is embedded in the pressure chamber and can slide along the depth direction of the pressure chamber. The telescopic rod is sealed and connected to the pressure chamber, and the lower end of the telescopic rod is connected to the telescopic end.

[0053] In a further embodiment of the present invention, a hydraulic cavity is provided in the pressure head seat 2110, and liquid is introduced into the hydraulic cavity. The pressure cavity is provided with a liquid inlet channel, and the liquid inlet channels of all pressure structures 2400 are connected with the hydraulic cavity. The liquid enters the pressure cavity through the liquid inlet channel and then transmits pressure to the telescopic end; and because all pressure cavities are connected with the hydraulic cavity, the hydraulic pressure in each pressure cavity is equal, the pressure generated is the same, and the pressing force applied by each telescopic end to each part of the workpiece surface is the same, so that the workpiece is subjected to uniform force.

[0054] The liquid inlet channel is provided with a liquid inlet valve. During operation, when the liquid inlet valve is opened, since the pressure chamber is communicated with the hydraulic chamber, changing the hydraulic pressure in the hydraulic chamber can change the hydraulic pressure in the pressure chamber, thereby changing the pressure applied to the telescopic end.

[0055] It can be imagined that the pressure structure 2400 can also be an element that can provide driving force such as a common spring or a common cylinder, and different elements can be selected according to different pressing forces and size requirements.

[0056] Refer to Figure 6 , in some specific embodiments of the present invention, some of the telescopic ends are connected with a first pressing rod 2300, and the pressure structure 2400 can transmit pressure to the first pressing rod 2300.

[0057] Since the pressure structure 2400 has a large volume and the distance between multiple first pressing rods 2300 is large, the positions on the workpiece that are relatively close cannot be pressed simultaneously. In order to meet the pressing requirements of various positions on the workpiece surface, therefore, refer to Figure 7 , Figure 9 , in some specific embodiments of the present invention, some of the telescopic ends are connected with two second pressing rods 2500. The two second pressing rods 2500 form a group, and the second pressing rods 2500 in the same group are rotatably connected to the same pressure structure 2400. The pressure structure 2400 can transmit pressure to the second pressing rods 2500, and the two second pressing rods 2500 form a group, and the second pressing rods 2500 in the same group are rotatably connected to the same pressure structure 2400. The distance between the second pressing rods 2500 in the same group is small, and the adjacent positions of the workpiece can be pressed simultaneously. Since the surface of the workpiece is uneven, in order to meet the pressing requirements of various height positions on the workpiece surface, the second pressing rods 2500 can rotate according to the height of the workpiece surface to press the workpiece.

[0058] Refer to Figure 9 , in a further embodiment of the present invention, a rotating block 2510 is hinged to the output end of the pressure structure 2400, and the second pressing rods 2500 in the same group are hinged to the rotating block 2510. Since the length of the second pressing rods 2500 is fixed, when the heights of the workpiece surfaces contacted by the second pressing rods 2500 in the same group are different, the two second pressing rods 2500 drive the rotating block 2510 to rotate, so that the second pressing rods 2500 in the same group can all abut against the workpiece surface.

[0059] If the second pressing rod 2500 is fixedly connected to the rotating block 2510, when the rotating block 2510 rotates, the second pressing rod 2500 will also rotate to a certain angle with the plane, so that the contact area between the second pressing rod 2500 and the workpiece surface is reduced, and the pressing effect is weakened. Therefore, in this embodiment, the second pressing rod 2500 is hinged to the rotating block 2510, and a guiding member is provided at the second pressing rod 2500. When the rotating block 2510 is inclined, the second pressing rod 2500 can always maintain a state close to vertical, contacting the workpiece as much as possible, which can not only meet the pressing requirements for various parts of the workpiece surface, but also ensure the pressing effect.

[0060] Referring to Figure 4 , in some specific embodiments of the present invention, the lifting table 1020 is connected with a guiding structure 1200 to provide guiding for the lifting of the lifting table 1020. Specifically, the guiding structure 1200 is a guiding column. Through holes 1210 are provided at the left and right ends of the lifting table 1020. The guiding column is slidably inserted into the through holes 1210 and connected to the workbench 1010. The driving member 2200 drives the lifting table 1020 to lift along the guiding column, thereby driving the pressing head seat 2110 to lift, so that the pressing head seat 2110 accurately presses towards the workpiece position.

[0061] Referring to Figure 4 , in some specific embodiments of the present invention, a collision prevention rod 1300 is connected to the bottom surface of the lifting table 1020. The collision prevention rod 1300 rises and falls with the lifting table 1020, and the bottom of the collision prevention rod 1300 is lower than the bottom of the pressing head seat 2110. When the lifting table 1020 drops, the collision prevention rod 1300 will first collide with the workbench 1010 and prevent the lifting table 1020 from continuing to descend, preventing the pressing head seat 2110 from hitting the workbench 1010 and damaging the first pressing rod 2300 or the second pressing rod 2500.

[0062] The usage method of the present invention is as follows: Fix the workpiece on the support plate 1100, install the pressure structure 2400 at the bottom of the pressing head seat 2110 according to the surface condition of the workpiece, and install the corresponding first pressing rod 2300 or second pressing rod 2500 on the telescopic end of the pressure structure 2400. The driving member 2200 drives the lifting table 1020 to descend. After the first pressing rod 2300 and the second pressing rod 2500 contact the workpiece, the lifting table 1020 continues to descend, so that the first pressing rod 2300 expands and contracts according to the surface height of the workpiece, and the second pressing rod 2500 rotates according to the surface height, until both the first pressing rod 2300 and the second pressing rod 2500 press the workpiece surface tightly; Open the air valve 2420 (or the liquid inlet valve), and change the pressure in the air cavity (or the hydraulic cavity) as needed, that is, change the pressure in the driving cavity 2450 (or the pressure cavity), so as to change the pressing force applied to the workpiece by the first pressing rod 2300 and the second pressing rod 2500.

[0063] When it is necessary to replace the workpiece or other accessories, the driving member 2200 drives the lifting table 1020 back to the initial position. When the first sensor 3150 senses that the lifting table 1020 has moved in place, the telescopic end of the telescopic limiting member 3130 extends into the first connection hole 3120 to fix the lifting table 1020. After the replacement is completed, the telescopic end of the telescopic limiting member 3130 retracts, and the driving member 2200 continues to drive the pressing head assembly 2100 to work.

[0064] When maintenance is required, power off the device. The maintenance personnel remove the limiting rod 3230, pass the limiting rod 3230 through the second limiting hole 3210 and insert it into the second connection hole 3220 to fix the lifting table 1020. After the maintenance is completed, the maintenance personnel remove the limiting rod 3230 from the second limiting hole 3210 and insert the limiting rod 3230 into the placement hole 3240, then the device can be restarted.

[0065] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0066] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. A workpiece detection and pressing platform, characterized in that include: A rack (1000) is provided with a lifting platform (1020); A support plate (1100) for placing a workpiece, the support plate (1100) being provided with a yield structure (1110) matching the workpiece; A clamping mechanism (2000) is arranged above the support plate (1100), the clamping mechanism (2000) comprising a pressing head assembly (2100) and a driving member (2200), the pressing head assembly (2100) being arranged on the bottom surface of the lifting platform (1020), the pressing head assembly (2100) having an initial position and a working position for clamping the workpiece, the driving member (2200) being connected to the lifting platform (1020) to drive the lifting platform (1020) to rise and fall, thereby realizing the switching of the pressing head assembly (2100) between the initial position and the working position, the pressing head assembly (2100) being retractable to clamp against different heights of the workpiece surface; and further comprising a safety limit structure (3000) for fixing the pressing head assembly (2100) at the initial position; The safety limit structure (3000) includes an automatic limit structure (3100). One end of the automatic limit structure (3100) is fixedly connected to the frame (1000), and a telescopic limit member (3130) is provided at the other end. A first connection hole (3120) is provided on the lifting table (1020). When the indenter assembly (2100) is in the initial position, the telescopic limit member (3130) extends into the first connection hole (3120) to fix the indenter assembly (2100). The safety limit structure (3000) further includes a manual limit structure (3200). One end of the manual limit structure (3200) is fixedly connected to the frame (1000), and a second limit hole (3210) is provided at the other end. A detachable limit rod (3230) is provided on the second limit hole (3210). A second connection hole (3220) is correspondingly provided on the lifting table (1020). When the indenter assembly (2100) is in the initial position, the second limit hole (3210) is aligned with the second connection hole (3220), and the indenter assembly (2100) can be fixed by the limit rod (3230). When the lifting table (1020) drives the indenter assembly (2100) back to the initial position, the automatic limit structure (3100) is activated. Among them, a first limit hole (3110) is provided at the lower end of the automatic limit structure (3100), and the telescopic end of the telescopic limit member (3130) can extend out of the first limit hole (3110). When the indenter assembly (2100) rises to the initial position, the first limit hole (3110) is aligned with the first connection hole (3120), and the telescopic end of the telescopic limit member (3130) passes through the first limit hole (3110) and extends into the first connection hole (3120). A placement hole (3240) is provided at the upper end of the manual limit structure (3200), the limit rod (3230) is inserted into the placement hole (3240), and a third sensor (3250) is provided beside the placement hole (3240) to detect whether the limit rod (3230) is located in the placement hole (3240). The indenter assembly (2100) includes a pressure structure (2400) and an indenter seat (2110). The indenter seat (2110) is provided on the bottom surface of the lifting table (1020), the pressure structure (2400) is connected to the bottom of the indenter seat (2110), the pressure structure (2400) is connected with a telescopic end, and the pressure structure (2400) can transmit pressure to the telescopic end. Two second pressure rods (2500) are connected to a part of the telescopic end. The two second pressure rods (2500) are in a group, and the second pressure rods (2500) in the same group are rotatably connected to the same pressure structure (2400). The output end of the pressure structure (2400) is hinged with a rotating block (2510), and the second pressure rods (2500) in the same group are hinged to the rotating block (2510). When the heights of the workpiece surfaces contacted by the second pressure rods (2500) in the same group are different, the two second pressure rods (2500) drive the rotating block (2510) to rotate, so that the second pressure rods (2500) in the same group can all abut against the workpiece surface. When the rotating block (2510) is inclined, the second pressure rods (2500) can always maintain a state close to vertical.

2. The workpiece detection and pressing platform according to claim 1, wherein: The pressure structure (2400) is a nitrogen spring. The nitrogen spring has a driving cavity (2450). An air inlet channel (2410) is provided in the driving cavity (2450). An air cavity is provided in the pressure head seat (2110). Compressed gas is introduced into the air cavity. The air inlet channels (2410) of all the pressure structures (2400) are communicated with the air cavity, and an air valve (2420) is provided on the air inlet channel (2410).

3. The workpiece detection and pressing platform according to claim 1, characterized in that: The pressure structure (2400) is a hydraulic telescopic assembly. The hydraulic telescopic assembly has a pressure cavity. A liquid inlet channel is provided in the pressure cavity. A hydraulic cavity is provided in the pressure head seat (2110). Liquid is introduced into the hydraulic cavity. The liquid inlet channels of all the pressure structures (2400) are communicated with the hydraulic cavity.

4. The workpiece detection and pressing platform according to claim 2 or 3, characterized in that: Some of the telescopic ends are connected with first pressure rods (2300).

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